Does Java have an “is kind of class” test method

Question

I have a baseclass, Statement, which several other classes inherit from, named IfStatement, WhereStatement, etc... What is the best way t

Answer 1

if(object instanceof WhereStatement) {
   WhereStatement where = (WhereStatement) object;
   doSomething(where);
}

Note that code like this usually means that your base class is missing a polymorphic method. i.e. doSomething() should be a method of Statement, possibly abstract, that is overridden by sub-classes.